Komatsu WA900-3E0 User manual

www.Komatsu.com Printed in Japan 200703 IP.SIN (10)
CEN00187-01 Materials and specifications are subject to change without notice
is a trademark of Komatsu Ltd. Japan
FLYWHEEL HORSEPOWER
638 kW 856 HP @ 2050 rpm
BUCKET CAPACITY
11.5–13.0 m315.0-17.0 yd3
WHEEL LOADER
Photo may include optional equipment.
Operating weight Tipping load
Straight Full turn
Remove ROPS canopy -1385 kg -3,055 lb -1220 kg -2,690 lb -1180 kg -2,600 lb
Remove steel cab -430 kg -950 lb -335 kg -740 lb -330 kg -730 lb
STANDARD EQUIPMENT
OPTIONAL EQUIPMENT
●2-spool valve for boom and bucket
controls
●Alternator, 90 A/24 V
●Air conditioner
●Automatic transmission F3 / R3
●Back-up alarm
●Back-up lamp
●Batteries, 160 Ah/12 V x 4
●Boom kick-out
●Bucket positioner
●Counterweight
●Directional signal
●Emergency brake
●Engine, Komatsu SAA12V140E-3 diesel
●Floormat
●Front working lights (2)
●Hard water area arrangement
(corrosion resister)
●Head lights (2)
●Lift cylinders and bucket cylinder
●Radiator mask, lattice type
●Rear access stairs
●Rear defroster (electric)
●Rearview mirrors
●Rear window washer and wiper
●Rear working lights (2)
●Room mirror
●ROPS/FOPS canopy
●Seat belt
●Seat, suspension type with reclining
●Service brakes, wet disc type
●Side working lights (2)
●Standard boom
●Starting motor, 7.5 kW/24 V x 2
●Steel cab included front wiper, windshield
washer and power window
●Steering wheel, tiltable
●Sun visor
●Tires (45/65-45-58PR L5 tubeless)
and rims
●Water separator
●AJSS (advanced Joystick Steering
System)
●AM/FM radio
●AM/FM stereo radio cassette
●Ashtray and cigarette lighter
●Automatic greasing
●Bucket corner teeth
●Bucket teeth (weld-on/tip type)
●Counterweight for high lift boom
●Emergency steering (SAE)
●Engine pre-lube system
●Fast fill fuel system
●Fenders
●Fire extinguisher
●Heater and defroster
●High lift boom
●Mesh chain
●Ordinary spare parts
●Power train guard
●Rear under view mirror
●Sweeper wing
●Tires (45/65-R45 L5 tubeless)
●Tool kit
●Under view mirror
●Vandalism protection
●VHMS (Vehicle Health Monitoring System)
●Yellow rotating lamp
WEIGHT CHANGES
WA900-3E0
WA
900

WALK-AROUND
WHEEL LOADER
WA900-3E0
32
Reliability
●Reliable Komatsu designed and
manufactured components
●Sturdy main frame
●Engine pre-lube system (Optional)
●Maintenance-free, fully hydraulic,
wet disc brakes
See page 6.
●Hydraulic hoses use flat face
O-ring seals
●Cathion electrodeposition process
is used to apply primer paint
●Powder coating process is used to
apply main structure paint
●Sealed DT connectors for electrical
connections
Easy Maintenance
●Simple checks
●“VHMS” (Vehicle Health Monitoring
System) (Optional)
See page 7.
●Rear access stairs
●Auto greasing system (Optional)
Photo may include optional equipment.
High Productivity
& Low Fuel Consumption
●High performance SAA12V140E-3 engine
●Low fuel consumption
●Dual-mode active working power select system
●Large dumping clearance
See pages 4 and 5.
Excellent Operator Environment
●Automatic transmission with ECMV
●Tiltable steering column
●“AJSS” (Advanced Joystick Steering System)
(Optional)
●Roomy, quiet cab with power windows
●Low vibration & noise
●Pillar-less large cab with ROPS/FOPS canopy
●Comfortable operator’s seat
See pages 8 and 9.
Harmony with Environment
●EPA Tier 2 emission certified
●Low fuel consumption
Building on the technology and expertise Komatsu has
accumulated since its establishment in 1921, GALEO presents
customers worldwide with a strong, distinctive image of technological
innovation and exceptional value. The GALEO brand will be employed for
Komatsu’s full lineup of advanced construction and mining equipment.
Designed with high productivity, operator comfort and environmental
considerations in mind, the machines in this line reflect Komatsu’s
commitment to contributing to the creation of a better world.
Genuine Answer for Land
and Environment Optimization
WHEEL LOADER WA900-3E0
FLYWHEEL HORSEPOWER
638 kW 856 HP @ 2050 rpm
BUCKET CAPACITY
11.5–13.0 m315.0-17.0 yd3

HIGH PRODUCTIVITY AND LOW FUEL CONSUMPTION
WHEEL LOADER
WA900-3E0 WHEEL LOADER
4 5
Large Dumping Clearance
The WA900-3 was
designed with ample
dumping clearance for
dump truck matching.
High Breakout Force
Komatsu wheel loaders have high-tensile steel Z-bar loader
linkages for maximum rigidity and maximum breakout force.
Sealed loader linkage pins extend greasing intervals.
Breakout force: 67900 kg 149,690 lb
13.0 m317.0 yd3Excavating bucket (spade nose) with tipteeth
Excellent Stability
The WA900-3 has the widest tread in its class 3,350mm (11')
and a long 5,450mm (17'11'') wheelbase, for maximum
machine stability.
Static tipping load
(with 45/65-45-58 PR (L-5) tires / bucket 13.0 m317.0 yd3)
Straight: 65670 kg 144,780 lb
40˚ full turn: 57430 kg 126,610 lb
High Performance SAA12V140E-3 Engine
Electronic Heavy Duty Common Rail fuel injection system
provides optimum combustion of fuel.
This system also provides fast throttle response to match the
machine’s powerful tractive effort and fast hydraulic response.
Net: 638 kW 856 HP
Low Emission Engine
This engine is EPA Tier 2 emission certified without
sacrificing power or machine productivity.
Low Fuel Consumption
Low fuel consumption is achieved because of the
low-noise, high-torque engine and the large-capacity torque
converter with maximum efficiency in the low-speed range.
Durable Bucket
Komatsu buckets are manufactured using high-tensile
strength steel with replaceable welded wear plates for
extended bucket life. Additional strength has been added to
the bucket bottom corners, side edges and spill guard ends
for increased durability.
Bucket capacities
13.0m317cu.yd
Dual-Mode Active Working System
The machine can be equipped with two mode active working
system. This system provides the most efficient hydraulic flow
for your operation.
The active working
switch has two
modes: powerful
loading or normal
loading.
●Powerful loading mode:
Hydraulic flow towards the work equipment can be
increased and reduced as and when required.
●Normal loading mode:
All hydraulic flow is transferred directly to the work
equipment.
Digging/Loading
Reduces hydraulic flow from switch pump when necessary.
Traction is increased, as the hydraulic pressure load for digging/shoveling is reduced.
Easy for heavy digging.
Loader pump
Switch pump
Loader pump
Switch pump
Raising the lift boom
While the lift boom is raised, all the hydraulic flow from
the switch pump goes to the work equipment.
Active Working Switch
Powerful
Loading
Powerful
Fast
WA900-3E0
Digging/Loading
The hydraulic flow from switch pump goes to work equipment.
Traction while digging/shoveling is not increased.
The speed of the lift boom is increased in all operations.
Loader pump
Switch pump
Active Working Switch
Normal
Loading
Fast
WA900
& HD785
4285mm
4640mm
2450mm
W=5210mm
Dual modes switch

7
INCREASED RELIABILITY
WHEEL LOADER
WA900-3E0 WHEEL LOADER
EASY MAINTENANCE
6
Komatsu Components
Komatsu manufactures the engine, torque converter,
transmission, hydraulic units, electric parts, on this wheel
loader. Komatsu loaders are manufactured
with an integrated production system under a strict quality
control system.
Engine pre-lube System (optional)
Durability of the engine is achieved by raising the engine oil
pressure before starting the engine. When the operator turns
the key, the pre-lubrication pump sends oil from the engine
oil pan to the engine oil filter and raises the pressure of that
oil to the set pressure. Then, the starting motor rotates to
start the engine.
Maintenance-Free Braking System
Service brakes employ two hydraulically-actuated
independent circuits which are adjustment-free, fully-sealed,
wet disc units, preventing intrusion of dirt and dust. Since the
brake system does not use air, it provides many features
such as absence of condensation, dependable braking even
in cold conditions, no need for
drainage, and rust free piping.
What's more, charging time after
engine starting is drastically
shortened and pedal depressing
effort is reduced.
High-rigidity Frames and Loader Linkage
The front and rear frames and the loader linkage have more
torsional rigidity to secure resistance against increased
stress. Frame and loader linkage are designed to
accommodate actual working
loads, and simulated
computer testing proves
its strength.
Flat Face-to-Face O-Ring Seals
Flat face-to-face O-ring seals
are used to securely seal
hydraulic hose connections
and to prevent oil leakage.
In addition, buffer rings are
installed to the head side of
the all-hydraulic cylinders to
lower the load on the rod
seals and maximize
reliability.
Cathion Electrodeposition Primer Paint/
Powder Coating Final Paint
Cathion electrodeposition paint is applied as a primer
paint and powder coating is applied as topcoat to the
exterior sheet metal parts. This process results in a
durable paint finish, even in the most severe environments.
Some external parts are made of plastic providing long life
and high impact resistance.
Sealed DT Connectors
Main harnesses and controller connectors are equipped
with sealed DT connectors
providing high reliability, water
resistance and dust resistance.
buffer rings
dust seal
rod packing
nipple
hose O-ring
Simple Checks, Easy Maintenance
The main monitor and the maintenance monitor (EDIMOS II)
are neatly arranged on the instrument panel for a quick, clear
reading of machine functions at all times. The main monitor
also has a diagnostic function.
Main monitor Maintenance monitor
Large Side Door
Right side door is easy to open
and provides accessibility for
maintenance.
Fuel Tank Cap
with Mud Cover
and Large Tool
Box
Rear Access Stairs
For the purpose of boarding and exiting machine, rear
access stairs with handrail is provided. The step width,
clearance, and the step angle have been designed for
climbing both up and down. A step light provides light for
night boarding.
Auto-Greasing System (optional)
The periodic lubrication points, except for drive shaft, are
greased automatically according to a preset amount and
interval. Quick-change grease canisters make replacement
easy and clean.
VHMS (Vehicle Health Monitoring System) (optional)
VHMS is a management system for large equipment for
use in mining, which enables detailed monitoring of fleet
via satellite communications. Komatsu and distributors can
analyze “vehicle health”and other operating conditions and
provide the information to job site using the internet from a
remote location on a near-real time basis.
Satellite
communication(option)
Personal Computer
terminal
(for downloading data)
WebCARE Server
Komatsu
distributors
KOMATSU
Customer
job site
Photo may include optional equipment.
WA900-3E0
Rear axle
Engine
Torque converter
Damper
Transmission
Front axle
Tool boxFuel tank cap

8 9
OPERATOR ENVIRONMENT
WHEEL LOADER
WA900-3E0 WHEEL LOADER
Automatic Transmission with
Electronically Controlled Modulation Valve (ECMV)
Automatic transmission with ECMV automatically selects the
proper gear speed based on travel speed, engine speed, and
other travel conditions. The ECMV system engages the
clutch smoothly to prevent lags and shocks when shifting.
This system provides efficient machine operation and a
comfortable ride.
●Kick-down switch:
This valuable feature for
increases productivity.
With the touch of a finger,
the kick-down switch
automatically downshifts
from second to first when
beginning the digging cycle. It automatically upshifts from
first to second when the direction control lever is placed in
reverse. This results in increased rim pull for better bucket
penetration and reduced cycle times for higher productivity.
●Hold switch: Auto shift is selected and if the operator
turns on this switch when the lever is at the 3rd gear
speed position, the
transmission is fixed to that
gear speed.
Electronically Controlled Transmission Lever
Easy shifting and directional changes with Komatsu two-lever
electronic shifting. Change direction or shift gears without
removing the shifting hand from the steering wheel. Solid
state electronics and conveniently located direction and gear
shift controls make this possible. Automatic shifts in ranges
two through four keep production
high and manual shifting at a
minimum.
AJSS (Advanced Joystick Steering System)
(Optional)
AJSS is a feedback steering system which has been
incorporated to allow steering and forward and reverse
selection to be controlled
by wrist and finger control.
With the feedback
function, the machine
steering angle is exactly
the same angle as the
lever tilt angle.
Tiltable Steering Column & One-Glance Monitors
The steering column can be
easily tilt-adjusted to the most
comfortable position with one
lever.
1st
2nd
3rd
2nd 3rd1st
hold
hold
kick-down switch
auto change
Easy Operation Comfortable Operation
Variable Transmission Cut-off System
The operator can set the transmission cut-off pressure
desired for the left brake pedal using the switch located on
the right-side control panel. The operator can improve the
working performance by setting the cut-off pressure properly
depending on working condition.
●High cut-off pressure for digging operations.
●Low cut-off pressure for truck-loading operations.
Remote Boom Positioner
The highest and lowest position of the bucket can be set
from the cab to match any
truck body. Once the positioner
is set, the bucket is smoothly
stopped at desired position
with no shock.
Roomy, Quiet Cab With Power Windows
The cab is large, with a comfortably spacious interior and
power windows. Also, a wide viewing angle is guaranteed
because the cab is pillar-less. By
adopting a high-capacity air
conditioner, Komatsu ensures
operator comfort, no matter the
exterior conditions. Other features
designed with operators in mind
include a lunchbox storage space.
Low Vibration & Noise
The cab rests on Komatsu viscous damping
mounts (rubber and silicon oil) to reduce
vibration and noise. All hydraulic
equipment is mounted on high-resistance
rubber to further reduce vibration and noise.
Pillar-less Large Cab with ROPS / FOPS Canopy
A wide pillar-less flat glass provides excellent front visibility.
The wiper arm covers a
large area to provide great
visibility even on rainy
days.
Comfortable Operator's Seat
The operator's seat has a
reclining/air suspension design with
headrest to support the operator
comfortably during long operation.
Also, it is easy to adjust seat height
with air suspension.
WA900-3E0
Kick-down switch
Hold switch
3:Remote boom positioner switch
Steering Wheel Type
Rear heated glass provides clear
view even in freezing or
condensation conditions.
Lunchbox storage space
F & R
Shift up
Shift downHorn
1:T/M cut-off ON/OFF switch
2:T/M cut-off set switch
1
2
3

10 11
SPECIFICATIONS
WHEEL LOADER
WA900-3E0 WHEEL LOADER
AXLES AND FINAL DRIVES
Drive system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Four-wheel drive
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Fixed, full-floating
Rear . . . . . . . . . . . . . . . . . . . . . . . . .Center-pin support, full-floating,
22 ˚ total oscillation
Reduction gear . . . . . . . . . . . . . . . . . . . . . . . . . . . .Spiral bevel gear
Differential gear . . . . . . . . . . . . . . . . . . . . . . . . . .Straight bevel gear
Final reduction gear . . . . . .Planetary gear, single reduction, oil bath
BRAKES
Service brakes . . . . . . . . . . . . . . . . . . . . . . . .Hydraulically actuated,
wet disc brakes actuate on four wheels
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Dry disc brake
Emergency brake . . . . . . . . . . . . . .Parking brake is commonly used
1st 2nd 3rd
Forward 7.0 4.3 12.3 7.6 28.0 17.4
Reverse 7.1 4.4 12.4 7.7 28.3 17.6
15.011.5
High lift Boom
Standard Boom
Excavating Bucket (spade nose)
with teeth
115 100 95%
Bucket fill factor
17.013.0
Rock Bucket (spade nose)
with teeth
m3yd3
Bucket capacity: m3yd3
2023 2360 2698 3035 3372
1200 1400 1600 1800 2000
Material density: kg/m3lb/yd3
lb/yd3
kg/m3
ENGINE
Model . . . . . . . . . . . . . . . . . . . . . . . . . . . .Komatsu SAA12V140E-3
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Water-cooled, 4-cycle
Aspiration . . . . . . . . . . . . . . . . . .Turbocharged, air-to-air aftercooled
Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Bore x stroke . . . . . . . . . . . . . . . . .140 mm x 165 mm 5.51" x 6.50"
Piston displacement . . . . . . . . . . . . . . . . . . . . . . .30.48 ltr 1860 in3
Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .all-speed, electronic
Flywheel horsepower
SAE J1995 . . . . . . . . . . . . . . . . . . . . . . . . .Gross 672 kW 900 HP
ISO 9249/SAE J1349 . . . . . . . . . . . . . . . . . . .Net 638 kW 856 HP
Rated rpm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2050 rpm
Fan drive method for radiator cooling . . . . . . . . . . . . . . . .Mechanical
Fuel system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Direct injection
Lubrication system:
Method . . . . . . . . . . . . . . . . . . . . . . . .Gear pump, force-lubrication
Filter . . . . . . . . . . . . . . . . . . . . . . . Full-flow and bypass combined
Air cleaner . . . . . . . . . . . . . . . . .Dry type with automatic dust ejector
and pre-cleaner, cyclopac with vacuator
TRANSMISSION
Torque converter:
Type . . . . . . . . . . . . . . . . . . . .3-element, single-stage, single-phase
Transmission:
Type . . . . . . . . . . . . . . . . . . . . . . . . .Full-powershift, planetary type
Travel speed: km/h mph
Measured with 45/65-45-58 tires
HYDRAULIC SYSTEM
Steering system:
Hydraulic pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Piston pump
Capacity . . . . . . . . . . . .315 ltr/min 83.2 U.S. gal/min at rated rpm
Relief valve setting . . . . . . . . . . . .34.3 MPa 350 kgf/cm24,977 psi
Hydraulic cylinders:
Type . . . . . . . . . . . . . . . . . . . . . . . . . .Double-acting, piston type
Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Bore x stroke . . . . . . . . . . . . . .160 mm x 503 mm 6.3" x 19.8"
Loader control:
Hydraulic pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Piston pump
Capacity . . . . . . . . . . . . . . . . . . . . .415 ltr/min 109.6 U.S. gal/min
at rated rpm
Relief valve setting . . . . . . . . . . . .34.3 MPa 350 kgf/cm24,977 psi
Hydraulic cylinders:
Type . . . . . . . . . . . . . . . . . . . . . . . . . .Double-acting, piston type
Number of cylinders—bore x stroke:
Boom cylinder . . . . . . . . .2- 260 mm x 1368 mm 10.2" x 53.9"
Bucket cylinder . . . . . . . . . .1- 300 mm x 906 mm 11.8" x 35.7"
Control valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Spool type
Control positions:
Boom . . . . . . . . . . . . . . . . . . . . . . . .Raise, hold, lower, and float
Bucket . . . . . . . . . . . . . . . . . . . . . . . . .Tilt-back, hold, and dump
Hydraulic cycle time (rated load in bucket)
Raise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11.2 sec
Dump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.0 sec
Lower (Empty) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.8 sec
ROPS / FOPS & CAB
Structure complies with ISO 3471 ROPS (Roll-Over Protective
Structure) standards, as well as ISO 3449 FOPS (Falling Object
Protective Structure) standards. The cab is mounted on rubber pads
and is well insulated.
SERVICE REFILL CAPACITIES
Cooling system . . . . . . . . . . . . . . . . . . . . . . . .337 ltr 89.0 U.S. gal
Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . .1555 ltr 410.8 U.S. gal
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130 ltr 34.3 U.S. gal
Hydraulic system . . . . . . . . . . . . . . . . . . . . . . .725 ltr 191.5 U.S. gal
Axle (each front and rear) . . . . . . . . . . . . . . . .360 ltr 95.1 U.S. gal
Torque converter and transmission . . . . . . . . .140 ltr 37.0 U.S. gal
BUCKET SELECTION GUIDE
STEERING SYSTEM
Type . . . . . . . . . . . . . . .Articulated type, full-hydraulic power steering
Steering angle . . . . . . . . . . . . . . . . . . . . . . . . . . .40 ˚ each direction
Minimum turning radius at
the center of outside tire . . . . . . . . . . . . . . . . . . . . . .9200 mm 30'2"
Standard boom
High lift boom
Excavating Bucket Excavating Bucket
Spade nose Spade nose
Tipteeth teeth
Bucket capacity: heaped 13.0 m311.5 m3
17.0 yd315.0 yd3
struck 11.0 m39.7 m3
14.4 yd312.7 yd3
Bucket width 4810 mm 4810 mm
15'9" 15'9"
Bucket weight 12330 kg 11370 kg
27,180 lb 25,070 lb
Dumping clearance, max. height 4640 mm 5255 mm
and 45˚dump angle 15'3" 17'3"
Reach at max. height and 45˚dump angle 2450 mm 2235 mm
8' 7'4"
Reach at 2130 mm (7') clearance 3650 mm 4020 mm
and 45˚dump angle 12' 13'2"
Reach with arm horizontal and bucket level 4640 mm 4760 mm
15'3" 15'7"
Operating height (fully raised) 9680 mm 9875 mm
31'9" 32'5"
Overall length 14490 mm 14685 mm
47'6" 48'2"
Loader clearance circle (bucket at carry, 22000 mm 22200 mm
outside corner of bucket) 72'2" 72'10"
Digging depth: 0˚165 mm 160 mm
6.5" 6.3"
10˚645 mm 610 mm
2'1" 2'0"
Static tipping load: straight 65670 kg 62540 kg
144,780 lb 137,880 lb
40˚full turn 57430 kg 55030 kg
126,610 lb 121,320 lb
Breakout force 666 kN 703 kN
67900 kgf 71700 kgf
149,690 lb 158,070 lb
Operating weight 107200 kg 107350 kg
236,340 lb 236,670 lb
DIMENSIONS
D
A
E
FG
C
B
50°
All dimensions, weights, and performance values based on SAE J732c and J742b standards.
Static tipping load and operating weight shown include lubricant, coolant, full fuel tank, ROPS canopy, air conditioner, bucket and operator. Machine stability and
operating weight are affected by counterweight, or ballast, tire size, and other attachments.
Use either counterweight or ballast, not both. Apply the following weight changes to operating weight and static tipping load.
Measured with 45/65-45-58PR(L-5) tires
WA900-3E0
Standard High lift
Boom Boom
Tread 3350 mm 11'
Width over tires 4585 mm 15'1"
A Wheelbase 5450 mm 17'11"
B Hinge pin height, max. height 6960 mm 22'10" 7445 mm 24'5"
C Hinge pin height, carry position 800 mm 2'7"
D Ground clearance 550 mm 1'10"
E Hitch height 1390 mm 4'7"
F Overall height, top of the stack 5130 mm 16'10"
G Overall height, ROPS cab 5275 mm 17'4"